Size adjustable heating vest



FIG. 1 is a perspective view of the size adjustable heating vest showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a right side view thereof; and,

FIG. 5 is a left side view thereof.

The broken lines shown in the drawings represent stitching that forms no part of the claim. 

CLAIM The ornamental design for a size adjustable heating vest, as shown and described. 